Friction, Bearings, and Lubrication

2022 ◽  
pp. 209-265
Keyword(s):  
Friction Bearings

Effect of Lubrication of Fluid Friction Bearings with Media of Complex Rheology

2014 ◽  
Vol 630 ◽  
pp. 199-207 ◽  
Author(s):  
Leonid Savin ◽  
Alexey Kornaev ◽  
Elena Kornaeva
Keyword(s):  
Carrying Capacity ◽  
Computer Experiment ◽  
Friction Torque ◽  
Friction Loss ◽  
Shear Strain Rate ◽  
Fluid Friction ◽  
Lubricating Material ◽  
Two Dimensional Flow ◽  
Complex Rheology ◽  
Friction Bearings

The paper investigates the two-dimensional flow of an incompressible viscous fluid of complex rheology in the gap between two cylinders with respect to fluid friction bearings. The viscosity of the fluid is defined as a physical quantity field, satisfying the criterion of minimum friction loss approximated as a function of shear-strain rate and pressure. The resulting function is used to calculate the carrying capacity and the friction torque in the bearing. Computer experiment resulted in showing the effect of friction loss lowering due to considering complex rheology of lubricating material.

Active Compensation of Lightly Damped Electrohydraulic Cylinder Drives Using Derivative Signals

1969 ◽  
Vol 184 (1) ◽  
pp. 83-98 ◽  
Author(s):  
R. Bell ◽  
A. De Pennington
Keyword(s):  
Dynamic Response ◽  
Pressure Transducer ◽  
System Analysis ◽  
Active Damping ◽  
Active Compensation ◽  
Minor Loop ◽  
Mechanical Damping ◽  
Linearized Model ◽  
Load Mass ◽  
Friction Bearings

The dynamic response of a cylinder drive is considerably influenced by the mechanical damping at the load. This paper discusses the use of acceleration and pressure transducer signals to introduce active damping into drives where the load mass is supported on anti-friction bearings, i.e. where the inherent mechanical damping is a minimum. The analysis is based on the use of a linearized model. The significance of the model and the system analysis is substantiated by the results of experiments carried out to assess the merits of these forms of minor loop compensation.

20418 Modeling of Small Base Isolation System using Friction Bearings

2015 ◽  
Vol 2015.21 (0) ◽  
pp. _20418-1_-_20418-2_
Author(s):  
Katsumi KURITA ◽  
Shigeru AOKI ◽  
Yuji NAKANISHI ◽  
Kazutoshi TOMONAGA ◽  
Mitsuo KANAZAWA
Keyword(s):  
Base Isolation ◽  
Isolation System ◽  
Base Isolation System ◽  
Small Base ◽  
Friction Bearings
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